Add cloud PBX and public switched telephone network calling capability to Microsoft Teams with a subscription that combines Teams Phone and a Calling Plan. Teams Phone provides the telephony layer for Teams calling, while the Calling Plan component supplies the calling-plan service named by this offering. It is a software entitlement rather than a desk phone, headset, gateway, or other physical communications device. Country Zone 1 is explicitly designated for the United Kingdom and Canada. That geographic designation is the key selection point for organizations assigning Teams calling service to users in those countries. The offering carries an STU designation, distinguishing it from general commercial naming and making the exact subscription designation important when matching an existing Microsoft education tenancy or service assignment. Microsoft 20C909E2EDF0 identifies the Teams Phone with Calling Plan subscription for this UK and Canada zone. Select it when the deployment requires the bundled Teams Phone and Calling Plan service designation rather than Teams Phone capability alone. It fits Teams-based voice environments where users place and receive calls through the Teams client and the organization needs the country-zone-specific calling plan named on the subscription.